Oil Industry in ProgressCHINA'S fast-growing oil industry is featured in a set of six special stamps issued by the Ministry of Posts and Telecommunications on January 31, 1978.Stamp 1. A battery of...
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Oil Industry in ProgressCHINA'S fast-growing oil industry is featured in a set of six special stamps issued by the Ministry of Posts and Telecommunications on January 31, 1978.Stamp 1. A battery of...